Time-Dependent Deflection Responses of FG Porous Structures Subjected to Different External Pulse Loads

Journal of Vibration Engineering & Technologies, Год журнала: 2023, Номер 12(1), С. 857 - 876

Опубликована: Фев. 10, 2023

Язык: Английский

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Combined effect of temperature dependent material properties and boundary conditions on non-linear thermal stability of porous FG beams

Acta Mechanica, Год журнала: 2024, Номер 235(5), С. 2867 - 2887

Опубликована: Фев. 18, 2024

Язык: Английский

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Static and Dynamic Analyses of Multi-Directional Functionally Graded Porous Nanoplates with Variable Nonlocal Parameter Using MITC3 + Element

Journal of Vibration Engineering & Technologies, Год журнала: 2023, Номер 12(3), С. 5147 - 5171

Опубликована: Дек. 11, 2023

Язык: Английский

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Modal analysis of power law functionally graded material plates with rectangular cutouts

Mechanics Based Design of Structures and Machines, Год журнала: 2023, Номер 52(5), С. 2411 - 2439

Опубликована: Март 8, 2023

This article aims to analyze rectangular functionally graded material plates with cutouts of diverse sizes, numbers, and positions for free vibration using Mindlin's first-order shear deformation theory (FSDT). Isoparametric plate elements nine nodes five degrees freedom at each node were used the present finite element formulation. The Poisson ratio is assumed be constant throughout plate. At first, results piled up from formulation compared existing collected various previous journals different isotropic plates. After verification formulation, some new (nondimensional fundamental frequency) obtained considering shapes, cutouts, thickness ratio, aspect FGM power law index, edge conditions. Dynamic analysis interior support along cutout edges an integral part this study.

Язык: Английский

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Nonlocal Vibration Response of Double FG Porous Microbeams Adsorber with 2D PSH Network Under Magnetic Intensity for Large Frequency Range

Journal of Vibration Engineering & Technologies, Год журнала: 2025, Номер 13(1)

Опубликована: Янв. 1, 2025

Язык: Английский

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An investigation on the torsional vibration of a FG strain gradient nanotube

ZAMM ‐ Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, Год журнала: 2024, Номер 104(7)

Опубликована: Май 2, 2024

Abstract In this work, an attention is paid to the prediction of torsional vibration frequencies functionally graded porous nanotubes based on Lam strain gradient elasticity theory. The are formed nanomaterials that vary in radial direction. This study also aims obtain analytical solution model presented by for response, a simple manner, different rigid or restrained boundary conditions. torsion angle nanotube defined infinite Fourier series. Then, Stokes’ transformation applied force conditions desired state. An eigenvalue problem established with help two systems equations obtained. problem, which includes deformable springs at both ends nanotube, appears as general can find frequencies. It shown vibrational responses be significantly influenced through‐radius gradings material, material length scale parameters and consequently predicted giving proper values spring parameters.

Язык: Английский

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Vibrational Analysis of Magneto-viscoelastic Bi-directional Functionally Graded Beams Subjected to Complex Environments Based on a Novel High-Order Shear Deformation Theory

Journal of Vibration Engineering & Technologies, Год журнала: 2023, Номер 12(4), С. 5759 - 5770

Опубликована: Дек. 11, 2023

Язык: Английский

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Free Vibration Analysis of Functionally Graded Annular Circular Plates Using Classical Thin Plate Theory Based on Physical Neutral Surface

Journal of Vibration Engineering & Technologies, Год журнала: 2023, Номер 12(3), С. 3873 - 3896

Опубликована: Авг. 7, 2023

Язык: Английский

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Nonlinear free vibrational behavior of temperature-dependent two-directional functionally graded truncated cone-like shells in thermal environment

Journal of Vibration and Control, Год журнала: 2024, Номер unknown

Опубликована: Янв. 24, 2024

This article investigates nonlinear free vibrations of temperature-dependent two-directional functionally graded (TDTDFG) cone-like shells in thermal environment. The structure material is a combination ceramic and metal with mechanical characteristics varying continuously the thickness longitudinal directions. Initially, thermomechanical dynamic equations system are modeled based on first-order shear deformation theory (FSDT) strain-displacement relations von Kármán. Afterward, final governing equation for structure’s transverse motion obtained using Galerkin discretization method. Finally, solved improved Lindstedt-Poincaré method as an analytical technique, resulting calculating frequencies shell. To validate research’s results, calculated under different conditions compared results previous studies. After ensuring accuracy parametric study performed to evaluate effects various parameters linear TDTDFG shell this have demonstrated that gradient indices, geometric ratios, environment significant influence vibration behavior structures.

Язык: Английский

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Finite element approach for free vibration and transient response of bi-directional functionally graded sandwich porous skew-plates with variable thickness subjected to blast load

Defence Technology, Год журнала: 2024, Номер 42, С. 83 - 104

Опубликована: Авг. 30, 2024

At the first time, finite element method was used to model and analyze free vibration transient response of non-uniform thickness bi-directional functionally graded sandwich porous (BFGSP) skew plates. The whole BFGSP skew-plates is placed on a variable visco-elastic foundation (VEF) in hygro-thermal environment subjected blast load. skew-plate permitted vary non-linearly over both length width skew-plate, thereby faithfully representing real behavior structure itself. analysis based four-node planar quadrilateral with eight degrees freedom per node, which approximated using Lagrange Q4 shape function C1 level non-conforming Hermite refined higher-order shear deformation plate theory. forced parameters are fully determined Hamilton's principle Newmark-β direct integration technique. Accuracy calculation program validated by comparing its numerical results those from reputable sources. Furthermore, thorough assessment conducted determine impact various responses skew-plate. findings paper may be development civil military structures situations that prone exceptional forces, such as explosions impacts

Язык: Английский

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